公开(公告)号：US08923212B2

公开(公告)日：2014-12-30

申请号：US12191250

申请日：2008-08-13

申请人： Sanjiv Nanda ,  Ramin Rezaiifar ,  Mehmet Yavuz

发明人： Sanjiv Nanda ,  Ramin Rezaiifar ,  Mehmet Yavuz

IPC分类号： H04W16/02 ,  H04W48/02 ,  H04W12/08 ,  H04W48/04 ,  H04W64/00 ,  H04W72/04 ,  H04W84/04 ,  H04W84/18

CPC分类号： H04W36/30 ,  H04W12/08 ,  H04W16/02 ,  H04W36/04 ,  H04W36/06 ,  H04W36/08 ,  H04W48/02 ,  H04W48/04 ,  H04W64/00 ,  H04W72/0453 ,  H04W84/045 ,  H04W84/18 ,  Y02P60/216

摘要： In some aspect restricted access nodes are assigned to a designated common channel while access terminals that are in active communication with a macro access node may selectively be assigned to the designated channel. In some aspect an access terminal associated with macro access node may perform a handoff to a different carrier when the access terminal is in the vicinity of a coverage area of a restricted access node. In some aspect an access terminal associated with a macro access node may perform a handoff to a different carrier based on location information. In some aspect access to a restricted access node is controlled based on policy and/or based on operation of an access terminal associated with the restricted access node.

摘要翻译： 在一些方面，受限接入节点被分配给指定的公共信道，而与宏接入节点主动通信的接入终端可以选择性地分配给指定的信道。 在某些方面，当接入终端处于受限接入节点的覆盖区域附近时，与宏接入节点相关联的接入终端可以对不同的载波进行切换。 在一些方面，与宏接入节点相关联的接入终端可以基于位置信息执行到不同载波的切换。 在一些方面，基于策略和/或基于与受限接入节点相关联的接入终端的操作来控制对受限接入节点的接入。

公开(公告)号：US08837305B2

公开(公告)日：2014-09-16

申请号：US12276894

申请日：2008-11-24

申请人： Sanjiv Nanda ,  Jay Rodney Walton ,  Mehmet Yavuz

发明人： Sanjiv Nanda ,  Jay Rodney Walton ,  Mehmet Yavuz

IPC分类号： H04W4/00 ,  H04B1/00 ,  H04W52/24 ,  H04W56/00 ,  H04W52/20 ,  H04W52/32 ,  H04W52/14 ,  H04W52/44 ,  H04W52/38 ,  H04W28/04

CPC分类号： H04W72/082 ,  H04L1/1825 ,  H04L5/0092 ,  H04W28/04 ,  H04W52/143 ,  H04W52/20 ,  H04W52/244 ,  H04W52/32 ,  H04W52/322 ,  H04W52/325 ,  H04W52/38 ,  H04W52/44 ,  H04W56/001 ,  H04W56/0015 ,  H04W56/0025 ,  H04W74/04

摘要： Interference that occurs during wireless communication may be managed through the use of beam and null steering techniques. A method, apparatus and medium of communication determine an interference direction of a non-associated access terminal generating an interfering signal. Transmitted and received signals are then transceived away from the interference direction.

摘要翻译： 在无线通信期间发生的干扰可以通过使用波束和零转向技术来管理。 通信的方法，装置和介质确定产生干扰信号的非关联接入终端的干扰方向。 然后将发射和接收的信号收发远离干扰方向。

公开(公告)号：US08737317B2

公开(公告)日：2014-05-27

申请号：US12463695

申请日：2009-05-11

申请人： Mehmet Yavuz ,  Farhad Meshkati ,  Sanjiv Nanda

发明人： Mehmet Yavuz ,  Farhad Meshkati ,  Sanjiv Nanda

IPC分类号： H04W4/00

CPC分类号： H04W24/02 ,  H04W16/16 ,  H04W84/045

摘要： A carrier for a femtocell is selected from a set of carriers available to femtocells. The femto node determines a preference order for the set and measures received signal strength (RSS) for each carrier. The femto node determines a least interference carrier from the set based on the RSS for each carrier, then defines a selected carrier for the femtocell by comparing the RSS of the least interference carrier to the RSS of other carriers in the set. The selected carrier may have a RSS larger than or equal to the RSS of the least interference carrier offset by a predefined margin. The comparisons may be performed in the preference order. The set available to femto nodes may be a subset of all carriers available to a combination of femtocells and macrocells and one or more of the carriers available to femtocells also may be a carrier available to macrocells.

摘要翻译： 毫微微小区的载波从可用于毫微微小区的一组载波中选择。 毫微微节点确定该组的偏好顺序并测量每个载波的接收信号强度（RSS）。 毫微微节点基于针对每个载波的RSS确定来自该集合的最小干扰载波，然后通过将该最小干扰载波的RSS与该组中的其他载波的RSS进行比较来为毫微微小区定义所选择的载波。 所选择的载波可以具有大于或等于最小干扰载波偏移量的RSS大于预定边距的RSS。 比较可以以优先顺序执行。 可用于毫微微节点的集合可以是可用于毫微微小区和宏小区的组合的所有载波的子集，并且对于毫微微小区可用的一个或多个载波也可以是可用于宏小区的载波。

公开(公告)号：US08712461B2

公开(公告)日：2014-04-29

申请号：US12187310

申请日：2008-08-06

申请人： Mehmet Yavuz ,  Peter J. Black ,  Sanjiv Nanda

发明人： Mehmet Yavuz ,  Peter J. Black ,  Sanjiv Nanda

IPC分类号： H04B7/00

CPC分类号： H04W52/40 ,  H04W16/16 ,  H04W36/04 ,  H04W52/143 ,  H04W52/244 ,  H04W52/245 ,  H04W52/367

摘要： Transmit power (e.g., maximum transmit power) may be defined based on the maximum received signal strength allowed by a receiver and a minimum coupling loss from a transmitting node to a receiver. Transmit power may be defined for an access node (e.g., a femto node) such that a corresponding outage created in a cell (e.g., a macro cell) is limited while still providing an acceptable level of coverage for access terminals associated with the access node. An access node may autonomously adjust its transmit power based on channel measurement and a defined coverage hole to mitigate interference. Transmit power may be defined based on channel quality. Transmit power may be defined based on a signal-to-noise ratio at an access terminal. The transmit power of neighboring access nodes also may be controlled by inter-access node signaling.

摘要翻译： 可以基于接收机允许的最大接收信号强度和从发射节点到接收机的最小耦合损耗来定义发射功率（例如，最大发射功率）。 可以为接入节点（例如，毫微微节点）定义发射功率，使得在小区（例如，宏小区）中创建的相应中断受到限制，同时仍然为与接入节点相关联的接入终端提供可接受的覆盖水平 。 接入节点可以基于信道测量和定义的覆盖孔来自主地调整其发射功率以减轻干扰。 发射功率可以基于信道质量来定义。 可以基于接入终端的信噪比来定义发射功率。 相邻接入节点的发射功率也可以由接入间节点信令来控制。

公开(公告)号：US08676125B2

公开(公告)日：2014-03-18

申请号：US12611743

申请日：2009-11-03

申请人： Sanjiv Nanda ,  Mehmet Yavuz

发明人： Sanjiv Nanda ,  Mehmet Yavuz

IPC分类号： H04B1/00 ,  H04B15/00

CPC分类号： H04L25/03343 ,  H04B7/024 ,  H04B7/0413 ,  H04B7/0617 ,  H04L5/0073 ,  H04L5/0091 ,  H04W72/0413 ,  H04W72/082 ,  H04W84/045

摘要： A system and method of reducing interference on a communication channel between an access terminal and a serving cell or node are disclosed. A cooperation request may be sent to an interfering cell or node to reduce and/or mitigate interference on the communication channel caused by the interfering cell or node. The interfering cell or node may perform beamforming, may intermittently transmit its wireless signal, or may move at least one antenna to mitigate and/or reduce interference on the communication channel.

摘要翻译： 公开了减少接入终端与服务小区或节点之间的通信信道干扰的系统和方法。 可以向干扰小区或节点发送合作请求以减少和/或减轻由干扰小区或节点引起的对通信信道的干扰。 干扰小区或节点可以执行波束形成，可以间歇地发送其无线信号，或者可以移动至少一个天线以减轻和/或减少通信信道上的干扰。

公开(公告)号：US20120238268A1

公开(公告)日：2012-09-20

申请号：US13233810

申请日：2011-09-15

申请人： Andrei Dragos Radulescu ,  Vinay Chande ,  Jen Mei Chen ,  Sanjiv Nanda ,  Damanjit Singh ,  Mehmet Yavuz

发明人： Andrei Dragos Radulescu ,  Vinay Chande ,  Jen Mei Chen ,  Sanjiv Nanda ,  Damanjit Singh ,  Mehmet Yavuz

IPC分类号： H04W36/04 ,  H04W24/10 ,  H04W60/00

CPC分类号： H04W64/00 ,  H04W4/08 ,  H04W24/10 ,  H04W36/0061 ,  H04W36/0083 ,  H04W36/04 ,  H04W52/244 ,  H04W52/325 ,  H04W84/045

摘要： Methods and apparatuses are provided for causing active hand-in of a device from a macrocell base station to a femto node, which can be an inter-frequency hand-in. The femto node can broadcast a beacon over an operating frequency of the macrocell base station, and the macrocell base station, and/or one or more network components, can identify the femto node based on one or more parameters reported by the device from receiving the beacon. The beacon can be transmitted at varying powers to ensure active hand-in triggering, mitigate interference and/or can be powered on and off for such purposes. In addition, a macrocell base station can regulate compressed mode periods during which a device can measure the femto node based on receiving information regarding device proximity to the femto node, or a device can generate proximity indication messages base on measuring the beacon signals, etc.

摘要翻译： 提供的方法和装置用于使设备从宏小区基站到可以是频率间接入的毫微微节点的主动接入。 毫微微节点可以在宏小区基站的工作频率上广播信标，并且宏小区基站和/或一个或多个网络组件可以基于设备报告的一个或多个参数来识别毫微微节点，以接收 灯塔 可以以不同的功率发送信标，以确保主动的手持触发，减轻干扰和/或可以为此目的打开和关闭电源。 此外，宏小区基站可以调节压缩模式周期，在此期间，设备可以基于接收到与毫微微节点邻近的接收信息来测量毫微微节点，或者设备可以基于测量信标信号等产生接近指示消息。

公开(公告)号：US20110237261A1

公开(公告)日：2011-09-29

申请号：US12888169

申请日：2010-09-22

申请人： Farhad Meshkati ,  Vinay Chande ,  Mehmet Yavuz ,  Sanjiv Nanda

发明人： Farhad Meshkati ,  Vinay Chande ,  Mehmet Yavuz ,  Sanjiv Nanda

IPC分类号： H04W36/08

CPC分类号： H04W48/12 ,  H04W36/0072 ,  H04W52/0235 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/24

摘要： A cell reselection parameter is transmitted on one carrier frequency for a defined period of time to cause access terminals operating on that carrier frequency to more aggressively search for access points on at least one other carrier frequency. For example, a femto cell operating on one carrier frequency may transmit a broadcast channel including a cell reselection parameter such as Sintersearch on another carrier frequency that is used by a macro cell. Here, the value of the cell reselection parameter (e.g., Sintersearch) is chosen so that the access terminals will more aggressively conduct inter-frequency searches. In addition, the cell reselection parameter is transmitted for a period of time that ensures that a nearby access terminal will receive the parameter during its wakeup interval.

摘要翻译： 小区重选参数在一个载波频率上发送一定时间段，以使得在该载波频率上工作的接入终端能够更积极地搜索至少一个其它载波频率上的接入点。 例如，在一个载波频率上工作的毫微微小区可以在宏小区使用的另一个载波频率上发送包括诸如Sintersearch之类的小区重选参数的广播信道。 这里，选择小区重选参数（例如，Sintersearch）的值，使得接入终端将更积极地进行频间搜索。 此外，小区重选参数被发送一段时间，以确保附近接入终端在其唤醒间隔期间接收该参数。

公开(公告)号：US20100048212A1

公开(公告)日：2010-02-25

申请号：US12542294

申请日：2009-08-17

申请人： Mehmet Yavuz ,  Sanjiv Nanda ,  Manoj M. Deshpande ,  Chirag S. Patel

发明人： Mehmet Yavuz ,  Sanjiv Nanda ,  Manoj M. Deshpande ,  Chirag S. Patel

IPC分类号： H04W36/00

CPC分类号： H04W52/325 ,  H04W52/244 ,  H04W52/245 ,  H04W52/28 ,  H04W84/045

摘要： An access point generates beacons at different power levels at different times to provide an acceptable tradeoff between coverage area associated with the beacons and outage experienced at nearby access terminals. For example, a femto access point may transmit beacons at a relatively low power for a relatively long period of time to reduce interference at nearby access terminals that are being served by a macro access point. The femto access point may then transmit beacons at a relatively high power for a relatively short period of time to enable nearby access terminals to receive the beacons. Also, a given transmit chain may be used to provide frequency hopping of high and low power beacons.

摘要翻译： 接入点在不同时间产生不同功率电平的信标，以提供与信标相关联的覆盖区域和在附近接入终端处经历的中断之间的可接受的折中。 例如，毫微微接入点可以以相对较低的功率在相对长的时间段内发送信标，以减少正在由宏接入点服务的附近的接入终端的干扰。 毫微微接入点然后可以在相对较短的时间段内以相对高的功率发送信标，以使附近的接入终端能够接收信标。 此外，给定的发射链可以用于提供高和低功率信标的跳频。

公开(公告)号：US20090137241A1

公开(公告)日：2009-05-28

申请号：US12276916

申请日：2008-11-24

申请人： Mehmet Yavuz ,  Peter J. Black ,  Sanjiv Nanda ,  Yeliz Tokgoz

发明人： Mehmet Yavuz ,  Peter J. Black ,  Sanjiv Nanda ,  Yeliz Tokgoz

IPC分类号： H04W24/00 ,  H04W72/08

CPC分类号： H04W72/082 ,  H04L1/1825 ,  H04L5/0092 ,  H04W28/04 ,  H04W52/143 ,  H04W52/20 ,  H04W52/244 ,  H04W52/32 ,  H04W52/322 ,  H04W52/325 ,  H04W52/38 ,  H04W52/44 ,  H04W56/001 ,  H04W56/0015 ,  H04W56/0025 ,  H04W74/04

摘要： Interference that occurs during wireless communication may be managed by determination and application of an adaptive path loss adjustment. A method, apparatus and medium of communication determine a level of excess received interference based at least in part on out-of-cell interference (Ioc). The path loss is adjusted by an additional path loss on an uplink signal when the level of excess received interference exceeds an interference target that would cause a Rise-over-Thermal (RoT) metric to exceed stable communication.

摘要翻译： 可以通过自适应路径损耗调整的确定和应用来管理在无线通信期间发生的干扰。 通信的方法，装置和介质至少部分地基于小区外干扰（Ioc）来确定多余的接收干扰的水平。 当超出接收干扰的电平超过会导致上升热（RoT）度量超过稳定通信的干扰目标时，路径损耗由上行链路信号上的附加路径损耗来调整。

公开(公告)号：US20090129341A1

公开(公告)日：2009-05-21

申请号：US12274901

申请日：2008-11-20

申请人： Srinivasan Balasubramanian ,  Jen Mei Chen ,  Manoj M. Deshpande ,  Mehmet Yavuz ,  Sanjiv Nanda ,  Gavin B. Horn

发明人： Srinivasan Balasubramanian ,  Jen Mei Chen ,  Manoj M. Deshpande ,  Mehmet Yavuz ,  Sanjiv Nanda ,  Gavin B. Horn

IPC分类号： H04W36/00

CPC分类号： H04W36/0055 ,  H04W36/04 ,  H04W84/045

摘要： In a handover operation an access terminal is handed over from a source access point to a target access point. To facilitate efficient identification of a target access point, a handover operation may be initiated by the target access point. A candidate frequency search also may be invoked to confirm that an access terminal identified by a target access point for a handover is in the vicinity of the target access point. A source access point may verify whether an access terminal is in a vicinity of a target access point to determine whether to perform a handover operation. A source access point may handle potential ambiguity between several target access points by sending handover commands to each of these target access points. An access terminal also may assist in the determination of whether to perform a handover operation.

摘要翻译： 在切换操作中，接入终端从源接入点切换到目标接入点。 为了便于目标接入点的有效识别，切换操作可以由目标接入点发起。 还可以调用候选频率搜索以确认由目标接入点识别的用于切换的接入终端在目标接入点附近。 源接入点可以验证接入终端是否在目标接入点附近，以确定是否执行切换操作。 源接入点可以通过向这些目标接入点中的每一个发送切换命令来处理几个目标接入点之间的潜在模糊性。 接入终端还可以协助确定是否执行切换操作。